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Method for preparing liquid fuel with gamma-valerolactone

A technology of liquid fuel and valerolactone, which is applied in the preparation of liquid hydrocarbon mixture, the control/regulation of distillation of biological raw materials and hydrocarbon oil, etc., can solve problems such as harsh reaction conditions, and achieve simple reaction process, convenient operation, and technological process. simple effect

Active Publication Date: 2017-08-22
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a method of using 100% phosphoric acid solution as a catalyst to convert gamma-valerolactone into high-grade liquid fuel in one step under mild conditions, which solves the many problems currently required for the preparation of high-grade liquid fuel by using gamma-valerolactone One-step reaction process and harsh reaction conditions (such as high temperature, catalytic hydrogenation, etc.)

Method used

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  • Method for preparing liquid fuel with gamma-valerolactone
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Embodiment 1

[0026] In this embodiment, the specific steps of preparing liquid fuels by using phosphoric acid to catalyze the conversion of poly-3-hydroxybutyrate are as follows (for the flow chart, see figure 1 ):

[0027] (1) Take 15 g of γ-valerolactone and 60 mL of phosphoric acid solution (112.2 g) into a 100 mL p-polyphenyl reaction tank. The temperature was raised to 240 °C at a rate of 5 °C / min, and kept at a constant temperature of 240 °C for 6 h. After the reaction was completed, it was rapidly cooled to room temperature with cold water. It was found that the γ-valerolactone was basically completely converted by high-performance liquid chromatography, and the γ-valerolactone 49% of the oxygen in the lactone is removed as carbon dioxide, and part of the oxygen is removed as water and carbon monoxide;

[0028] (2) The product after the reaction in the step (1) was rotary evaporated at 240 °C and -0.09 Mpa to obtain an oil-water mixture and a phosphoric acid mixture, and the oil-wa...

Embodiment 2

[0036] Take 15 g of γ-valerolactone and 15 mL of phosphoric acid solution (28 g) into a 100 mL p-polyphenylene reaction tank. The temperature was raised to 260 °C by program, and kept at a constant temperature of 260 °C for 6 h. After the reaction was completed, it was cooled to room temperature, and light oil was obtained by rotary evaporation, and heavy oil was obtained by extraction and distillation with dichloromethane.

Embodiment 3

[0038] Take 1 g of γ-valerolactone and 50 mL of phosphoric acid solution (93.7 g) into a 100 mL p-polyphenylene reaction tank. The temperature was raised to 220 °C at a rate of 8 °C / min, and kept at a constant temperature of 220 °C for 12 h. After the reaction was completed, it was cooled to room temperature, and light oil was obtained by rotary evaporation, and heavy oil was obtained by extraction and distillation with dichloromethane.

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Abstract

The invention provides a method for preparing liquid fuel with gamma-valerolactone. The method includes the following steps that a phosphoric acid solution and gamma-valerolactone are put in a reaction tank to react for 3-12 h at the temperature of 220-260 DEG C, the material is cooled to room temperature, and then the liquid fuel is obtained. The phosphoric acid solution serves as a catalyst, gamma-valerolactone can be catalytically converted through one step at mild temperature (220-260 DEG C), high-calorific-value light oil and heavy oil products are prepared, and the total oil yield can reach up to 33.5 wt%. The technical process flow is simple, operation is convenient, and industrial application prospects are achieved. Compared with other technologies for preparing high-grade oil products by catalytically converting gamma-valerolactone, catalytic conversion of the phosphoric acid solution has the obvious advantages that no expensive hydrogen needs to be provided externally, the reaction process is simple (one-step reaction), and the temperature is mild (the temperature is lower than 260 DEG C).

Description

technical field [0001] The invention relates to the technical field of preparation of renewable liquid fuels, in particular to a method for preparing high-grade liquid fuels by catalytic conversion of gamma-valerolactone using phosphoric acid solution. Background technique [0002] With the depletion of petrochemical resources, the development and utilization of renewable biomass liquid fuel is an important means to solve the energy crisis. γ-valerolactone is an important bio-based platform compound, which can be obtained by hydrolysis of cellulose acid in plants to levulinic acid, and then obtained by hydrogenation and self-esterification of levulinic acid. However, γ-valerolactone has high water solubility and low calorific value, which greatly limits its application as high-grade vehicle fuel. A feasible way to utilize γ-valerolactone is to convert it into hydrocarbon-based liquid fuels of moderate molecular weight, which can be used to replace petrochemical gasoline (ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00C10G57/00C10G57/02
CPCC10G3/44C10G57/00C10G57/005C10G57/02C10G2300/4006Y02P30/20C10G7/12
Inventor 康世民杨其飞杨学斯王泽潘谭炯豪
Owner DONGGUAN UNIV OF TECH
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